FAQ: How do I retrieve assembly attributes at runtime?

How do I retrieve assembly attributes at runtime?Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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i know how to get the assembly's attributes at runtime, it's like this:
Assembly asm = Assembly.GetExecutingAssembly();
string asmDesc = ((AssemblyDescriptionAttribute)asm.GetCustomAttributes(typeof(
AssemblyDescriptionAttribute ),
false )[0]).Description;
but how to set it at runtime??
I just found AssemblyBuilder.SetCustomAttribute(), but can AssemblyBuilder be used in current asm or a assigned asm?
thx~

First, yes I've read every article I can find including this one:
http://msmvps.com/blogs/rfennell/archive/2010/03/27/mixed-mode-assembly-is-built-against-version-v2-0-50727-error-using-net-4-development-web-server.aspx
Of course it's for web server stuff, but I found this in my config file and added it.
However, my problem now is that if I build in release mode I get a hard error in the error list telling me the same thing, even though it runs fine in debug and has the information in my app.config file.
The really anoying part is that the error doesn't tell you WHICH assembly is the offending one.
Anyone have any ideas?

Hello!
Note: The text above was translated into English.
I experience this problem when adding DirectX references and usings to a Form in Visual Studio 10 Professional, Trial Version.
The dlls (Microsoft.DirectX; Microsoft.DirectX.Direct3D) are included from X:\Windows\Microsoft.Net\DirectX for Managed Code\1.0.2902.0\.
I really like to begin coding DirectX. Do you know what this Message means? What shall I do?
Many thanks, Regards

I'm building an application targeted at the .NET Framework 4 and want to use the Logging Application Block and notice that the 5.0.414.0 version installed by the MSI is targeted
at the 2.0.50727 runtime. If this 2.0 version of the Logging Application Block is used, are there any performance problems or other issues which would suggest that I install the Logging Application Block source code and compile it targeted at .NET Framework
4 and use that DLL??

I am desigining a windows form wherein I allow the user to upload a particular assembly file. The assembly file can be present at any location on the user's hard drive. I want to now load this assembly and read the classes present in this assembly.
I am doing this using Reflection, however I am not unable to unload the assembly which is once loaded through reflection. I have tried using AppDomains, but I am unable to load the assembly through AppDomain. Whenever I try to
load my assembly from the appDomain I get a error message "The specified assembly file or one of its dependencies does not exist". I have set the ApplicationBase path of the AppDomain to the location where the assembly file is being uploaded from. However
I am still not able to load the assembly from the AppDomain.

Can anyone please let me know in case I am missing something. Any help on this will be highly appreciated.

I have a .Net 2.0 prject , and need call .Net3.5 assembly. If the machine set up .net3.5, it can work; otherwise it will throw exception. Now I want to prepair two aseembly, .net2.0 and .net3.5. They are same source and IO, but .net2.0
disable some .net3.5 functions. When I found the machine doesn't support .net3.5, I call the .net2.0 aseembly. How do it?

I moved an existing VS 2008 .Net 3.5 framework application into VS 2010 .Net 4.0 framework. After some odd bugs with VS 2010 i can able to build the application.When i run the application i got error like " Could not load file or assembly ' or
one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.". Please tell me how can i resolve this issue?

You've been tasked with writing a Windows Form application using the .NET Framework that interacts with Microsoft Excel. If you are new to working with Excel in .NET and are having trouble learning how to format certain cells or cell ranges, then this little tip will come in handy. Rather than scour the internet hoping to find the correct set of constants or method syntax for formatting your spreadsheet, use the built in tools in Excel to write the familiar VBA code for you. Then, you can paste the VBA code generated by Excel into the sample C# code below and run it dynamically at runtime.

Localization is the process of customizing your application to a particular language, culture or locale. Visual Studio provides support for localizing Windows Forms with much ease. In this article, we will see how to localize windows forms and give the user the ability to change to his preferred language at runtime. When you run a localized application, the appearance is determined by two culture values. The UICulture property is used to specify which resource files will be loaded for the form. The Culture property, on the other hand, determines how strings such as dates, numerals, and currency amounts are formatted.Let us see the steps required to create a localized form. You can then expand this example and adopt the same approach for the rest of the forms in your project

Hi! Can someone tell me how I can troubleshoot the
following error: "Encountered multiple versions of the same assembly
with GUID...try pre-importing one of these assemblies".

The website developed in VS 2010 (.Net 3.5). This error is only received on my
workstation. Another person developing the site does not experience
this issue at all. Also, not sure if this matters, but on my workstation the 'Assembly
Information...' dialog contains no values even though the 'AssemblyInfo.vb' file does specify values for the title, desc, etc.
The GUID being referenced in the error is the main project of the three projects
within the solution.

I tried looking through the GAC, but do not see any references to the projects or DLLs in the VS solution and am not sure what else/where to look.

If I delete the copy of the solution on my local machine and pull down a copy from source control (AnkhSVN) the solution will build with no error. Once I make any changes, such as adding a new aspx file, then the error is received.

I want to create a new table to sql database at runtime. The column names would be "Name", "Date", "Event". I would also like to have one more column name "Image" but the problem is that since the amount of images will vary, I want the application to count the amount of files in the Multiple fileuploader and then add a image column to the table for the respected amount of files.

For example if i am uploading 3 files in the multiple fileuploader, the names should be "Name", "Date", "Event", "Image1", "image2", Image3"

I also would like that table name to be name dynamically from the textbox Name when the user enters the information.

I have the following code to make a new table, but I dont know how to name the fields at runtime like previously asked please help!!!

Then I get this error:The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

On web.config I already have this:<add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>

NOTE: The datacontext is in a different project (DLL proect) where I added a refernce to System.Data.Linq.

is there another way adding a refernce to a web project? or only though teh web.config?